Difference between revisions of "Slate"
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Latest revision as of 01:31, 25 February 2009
7-3-140
A roofing material which is obtained by quarrying a metamorphic stratified rock of the same name. The quarried blocks may be cleaved along the joint planes into individual slates of a desired thickness.
Please note that this is the term as it stands in the original IALA Dictionary edition (1970-1989)
